Solve.A gas shop engine rated at 80 hp only delivered 65 hp though a belt drive pump. What is the efficiency of this system?
Fill in the blank(s) with the appropriate word(s).
81.25%
R = 81.25
Mathematics
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Find the slope of the polar curve at the indicated point.r = 5(1 + cos?), ? = 
A. 
B. -2
C. 1
D. 2
Mathematics
Solve and simplify.x + 
= 
A. x = 
B. x = 
C. x = 
D. x = 
Mathematics
Simplify.6x - 2(6y - 10)
A. 6x - 12y + 10 B. 6x - 12y - 10 C. 6x - 12y + 20 D. 6x - 12y - 20
Mathematics
Simplify the rational expression. If the rational expression cannot be simplified, so state. 
A. 2
B. 
C. cannot be simplified
D. 3
Mathematics